asyncrat | b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8

General

Target

JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
Size

72KB
MD5

c0741c5f09e005636c81946e1c821474
SHA1

c81bd945e8870bb33e38182289bd9294c3c8ba7f
SHA256

b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8
SHA512

9abf032b19264800ee51450dd49d1c86764371d4020cad75356149c54ef596b52f877097be1ab9c3e195fba2d52fda255d7286ef857904a65b47f6b4b4732c5c
SSDEEP

768:QoDRMt9b8i9K4GR2VNuIx2FAhQ7CbEjbegr3iaxgvUroz0ClZN2tYcFmVc6K:QoDRMth9U2hfEbhrSjUroz5rNKmVcl

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

milla.publicvm.com:6606

milla.publicvm.com:7707

milla.publicvm.com:8808

Mutex

hzizmtfuyizxxugkf

Attributes

delay
40
install
true
install_file
cclaner.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000023c7b-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe

Executes dropped EXE 1 IoCs

pid	Process
4772	cclaner.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
924	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4372	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
Token: SeDebugPrivilege	4772	cclaner.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4856	2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe	99
PID 2244 wrote to memory of 4856	2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe	99
PID 2244 wrote to memory of 4876	2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe	101
PID 2244 wrote to memory of 4876	2244	JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe	101
PID 4856 wrote to memory of 4372	4856	cmd.exe	103
PID 4856 wrote to memory of 4372	4856	cmd.exe	103
PID 4876 wrote to memory of 924	4876	cmd.exe	104
PID 4876 wrote to memory of 924	4876	cmd.exe	104
PID 4876 wrote to memory of 4772	4876	cmd.exe	105
PID 4876 wrote to memory of 4772	4876	cmd.exe	105

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8 /tr '"C:\Users\Admin\AppData\Roaming\cclaner.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /ru system /rl highest /tn JaffaCakes118_b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8 /tr '"C:\Users\Admin\AppData\Roaming\cclaner.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4372
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp39F7.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4876
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:924
- - C:\Users\Admin\AppData\Roaming\cclaner.exe
    "C:\Users\Admin\AppData\Roaming\cclaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp39F7.tmp.bat

Filesize
151B

MD5
e56623b57b6bd5164432a09660d05903

SHA1
8690d1853642be164200d73eb4d54ad671fa39a1

SHA256
2f25e6a3ad57a2d0398f253636a11a693eb0b4e4234adbf19f1a3b9769a7c462

SHA512
73fbd26ed69a948bde2c303638baccadb5589127b31ee587624b3444e3f0bc902ece91310a940c86a469a6f4cd6e9b0f6702d07286b95906356114652963b3c3

Download Submit
C:\Users\Admin\AppData\Roaming\cclaner.exe

Filesize
72KB

MD5
c0741c5f09e005636c81946e1c821474

SHA1
c81bd945e8870bb33e38182289bd9294c3c8ba7f

SHA256
b9bdfaa517d5e41d4d2916336229fc6b273d81d800c5faa70c5aadb2b50c8fb8

SHA512
9abf032b19264800ee51450dd49d1c86764371d4020cad75356149c54ef596b52f877097be1ab9c3e195fba2d52fda255d7286ef857904a65b47f6b4b4732c5c

Download Submit
memory/2244-0-0x00007FFA81943000-0x00007FFA81945000-memory.dmp

Filesize
8KB

Download
memory/2244-1-0x0000000000FF0000-0x0000000001002000-memory.dmp

Filesize
72KB

Download
memory/2244-2-0x00007FFA81943000-0x00007FFA81945000-memory.dmp

Filesize
8KB

Download
memory/2244-3-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

Filesize
10.8MB

Download
memory/2244-8-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads